Systems, devices, methods, and computer-readable media for location determination of an orbiting device. A method can include receiving measurement data from a monitor device, the measurement data representative of a position of an orbiting space object with a mechanically moveable antenna, receiving, by processor circuitry, mission data indicating orientation of the antenna is changing from a first orientation to a second, different orientation by a specified time, determining, based on the mission data, an inter-signal correction (ISC), applying the determined ISC to the measurement data resulting in corrected measurement data, providing the corrected measurement data to a Kalman filter, and receiving, from the Kalman filter, a position estimate of the orbiting space object.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The device of claim 1, wherein the processor circuitry is further configured to determine, based on the position estimate, a location of a terrestrial object.
3. The device of claim 1, wherein the ISC is a spline function.
4. The device of claim 3, wherein the spline function includes linear sections including a (i) first linear section that begins about the time the antenna begins to move from the first orientation to the second orientation, (ii) and a second linear section, with a second slope about opposite a first slope of the first section, immediately after the first section.
6. The device of claim 5, wherein the FOM indicates a cost between code power and transient error of the measurement data.
7. The device of claim 5, wherein the identifying the ISC function of the ISC functions includes using multiple techniques to determine respective ISC functions of the ISC functions.
8. The device of claim 7, wherein the multiple techniques include a deterministic technique and a variational technique.
9. The device of claim 7, wherein processor circuitry is further configured to compare the respective ISC functions to each other and use the ISC function only if the respective ISC functions are equal.
11. The method of claim 10, further comprising determining, based on the position estimate, a location of a terrestrial object.
12. The method of claim 10, wherein the ISC is a spline function.
13. The method of claim 12, wherein the spline function includes linear sections including a (i) first linear section that begins about the time the antenna begins to move from the first orientation to the second orientation, (ii) and a second linear section, with a second slope about opposite a first slope of the first section, immediately after the first section.
15. The method of claim 14, wherein the FOM indicates a cost between code power and transient error of the measurement data.
16. The method of claim 14, wherein the identifying the ISC function of the ISC functions includes using multiple techniques to determine respective ISC functions of the ISC functions.
17. The method of claim 16, wherein the multiple techniques include a deterministic technique and a variational technique.
18. The method of claim 16, further comprising comparing the respective ISC functions to each other and use the ISC function only if the respective ISC functions are equal.
20. The non-transitory machine-readable medium of claim 19, wherein the operations further comprise determining, based on the position estimate, a location of a terrestrial object.
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October 4, 2021
May 7, 2024
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